RESTRUCTURING CHARGES (Summary of Activity, Restructuring Plans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2014			$ 105
Expense			1,613
Payments			(412)
Balance as of September 30, 2015	$ 1,306		1,306		$ 105
Domestic | Jonesboro
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2014			64
Expense			(14)
Payments			(36)
Balance as of September 30, 2015	14		14		64
Domestic | Kansas City
Restructuring Reserve [Roll Forward]
Expense			96
Balance as of September 30, 2015	96		96
Domestic | Facility Closing Costs | Jonesboro
Restructuring Reserve [Roll Forward]
Expense		$ 609
Domestic | Employee-Related Costs | Jonesboro
Restructuring Reserve [Roll Forward]
Expense				$ 192
Domestic | Employee-Related Costs | Corporate
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2014			32
Expense	807		1,531		279
Payments			(367)
Balance as of September 30, 2015	1,196		1,196		32
Nearshore | Costa Rica
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2014			9
Expense			0
Payments			(9)
Balance as of September 30, 2015	$ 0		$ 0		$ 9